In my case, I would have difficulty putting together a top 10 list for retail games alone. It would include 3D Land, Luigi's Mansion, Fire Emblem, Mario 3D Kart and Street Fighter, but beyond those there aren't any 3DS retail games that I feel passionate about.
Eshop has been critical to my enjoyment of the 3DS. Does anyone else feel that way, or am I the only one?